20080758 Ver 1_More Info Received_20080515

Battleboro Park Earthen Embankment Dtl-modifications rl
Subject: Battleboro Park _Earthen Embankment Dtl-modifications_rl
From: "Richard Callahan" <[e-mail]>
Date: Thu, 15 May 2008 17:10:55 -0400
To: <[e-mail]>
Joseph,
joseph.gyamfiCncmail.net
Thank you for speaking with me earlier this morning. As we discussed I am
enclosing the addition Design Calculations for the Earthen Embankment Weir height.
Earthen Embankment detail is located on Sheet L-6.2, detail #2. Likewise, this
detail has been revised with additional Erosion Control Fabric as requested.
Please contact me with any additional comments.
We look forward to your Approval Letter at your earliest convenience.
See enclosure for Details and Calculations.
Details #1 enclosed for reference, has not been changed.
Detail #2 enclosed, modified per your request. Notation # 3
addresses your comments.
Calcs enclosed, weir height of Earthen Embankment.
Thank you,
<<Dtl#2_6-2Amendments-Cals_rl.pdf>>
Richard Callahan
Site Solutions
2320 W. Morehead Street
Charlotte, NC. 28208
Direct 704-943-3183
Phone [phone]
Fax 704_521-8955
www.sitesolutionspa.com <http://www.sitesolutionspa.com/exchange>
Content-Description: Dtl#2_6-2Amendments-Cals_rl.pdf
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1 of 1 5/16/2008 9:04 AM
Battleboro Park
Rocky Mount, North Carolina
Storm Water Management
Report
February 8, 2008
Revised April 22, 2008
10- .
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SOLUTIONS
2 3 2 0
W. Morehead Street
Charlotte, NC 28208
Landscape Architecture
Site Planning
Civil Engineering
www.sitesolutionspa.com
Telephone-704.521-9880
Facalmile-704-521-8955
SS Project No. 23131
Battleboro Park
Rocky Mount, North Carolina
Design Head (weir elevation) for 1" Storm
Orfflce
Orifice Coefft., Co 0.60
Orifice Shape Circular
Orifice Diameter, Do 6 Ins
0.50 Ft
Orifice Area, Ao 0.20 Sf
CoAo 0.12
2g 64.40
Invert EL 95.00 Ft
Design Flow, Qo 0.56 Cfs
Hea&..above centroid H 0:35: ft.
Elev. Oriffice Invert 95.00
Elev. Oriffice Centroid 95.25
Min Eley Of Weir 55:60:
[Ao = 3,1416*D^2/4]
[h=((Qo/CoAo)^2)/2g]
Page 1 of 1
OUTSIDE EDGE OF 6' PVC AT 1.00% SLOPE OUTSIDE EDGE OF
SWALE EL.=96.0 TO LEVEL SPREADER. SWALE EL=96.0
TOP OFQWEIR-1 r EARTHEN WEIR
1. -- Atec A
EAM EMBANCMETIT WITH -
CONTROL WEIR. EMBANKMENT
TO BE GRADED, COMPACTED
AND SEEDED PER
SPECIFICATIONS
CLASS 'A' RIP RAP
AT FACE OF EARTH
EMBANKMENT

PROPOSED GRADE,
SEE GRADING PLAN
PROPOSED BOTTOM
OF SWALE #2
i
LM SPREADER, SEE
DETAIL #1 THIS SHEET.
WEIR ELEVETION
WEIR EL=95.5
2.5 FINVERT ELEV =93.5
('P'), SEE DETAIL
r #1 THIS SHEET. ' IT
- 7
INVERT ELFI/ 95.0 _
'7 r
6' PVC 0 1% SLOPE
CR055 5ECTION VIEW
D
( ?? Earthen Embankment w/
? N.r.s.
4 _ ? u
Control Weir, at Swale #2
TOP OF WEIR EL.=95.6
NORTH MMERON GREEN SM FABRIC. -
STAPLE WITH .11 GA, e u STAPLES AT 2'
O.C. DOWN THE SLOPE AND 1.8' O.C.
ACROSS THE SLOPE NO PLASM NEMNG
IS A.LOMV.
4TI ''
NORTH AMERICAN GREEN SC75 FABRIC.
STAPLE WITH A 1 CA, 64 U STAPLES AT 2'
O.C. DOWN THE SLOPE AND 1.6' O.C.
ACROSS THE SLOPE. NO PLASTIC NETTING
16 ALLOWED.

CLA% A
61 PVC (SEE DETAIL
#2 THIS SHEET).
WEIR
1W?
r ?
P' Ow. EL.)
iricnr ?1 IT
3' LAYER OF #57 STONE FILTER FABRIC
4's PERFORATED
SUBDRAIN, TO DAYLIGHT "•::"
MODULAR CONCRETE UNITS 0 124x81
MIN, FIELD VERIFY WITH OWNER PROIR
TO INSTALLATION.
31 LAYER OF #57 STONE
2-34 BALLAST STONE
CONTROL FABRIC
" "-6EO6YNTHETIC REINFORCEMENT
Tt
# REINFORCED BACKFILL COMPACTED 98%
OF MAXIMUM STANDARD PROCTOR
- DENSITY, SEE EARTHWORKS AND PAVING
SPECIFICATION FOR ADDITIONAL.
REQUIREMENTS
GRANULAR LEVELING PAD
12" ABC (MIN.)
* VERIFY TOP OF LEVEL SPREADER WILL =' -m
BE AT OR SLIGHTLY ABOVE EXISTING
GRADE PRIOR TO CONSTRUCTION
ELEVATION CHART
STRUCTURE "W" WEIR EL "P" INV. EL. LS LENGTH "BW" BASE WIDTH
Level Spreader #1 95.50 93.5 25' Min. 2'
D
(?1 Level Spreader
( N.T.S.